Trump threatened Monday to impose a 50% tariff on Canadian automobiles, car parts and steel starting next year as the trade rift with Ottawa deepens.
Trade talks between the otherwise allies and reliable trading partners collapsed last week. Long-planned U.S. tariffs on various Canadian goods went into effect after the talks broke off, and Canada has vowed to retaliate.
"Canada has been ripping off the United States of America for years," Trump posted on social media Monday morning. Criticizing Canada's "ridiculously high tariffs" on American farmers, Trump wrote: "Not sustainable, and NOT ANYMORE!"